TABLE 7-2 The Time Spent Studying by Students in the Week Before

question 6

Short Answer

TABLE 7-2
The time spent studying by students in the week before final exams follows a normal distribution with a standard deviation of 8 hours. A random sample of 4 students was taken in order to estimate the mean study time for the population of all students.
-Referring to Table 7-2, what is the probability that the sample mean exceeds the population mean by more than 2 hours?

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Definitions:

Prothrombin Time

A blood test that measures how long it takes blood to clot.

Lymphedema

A condition characterized by swelling usually in the arms or legs, due to a blockage in the lymphatic system preventing lymph fluid from draining well.

Lymphangitis

An inflammation of the lymphatic channels that occurs as a result of infection, often resulting in red, painful streaks under the skin.

Hematocrit Test

A blood test that measures the proportion of red blood cells in the blood.